| 摘要 |
The invention concerns a reagent for determining the ethyl alcohol content of a gas, particularly human breath, by means of a color reaction. This reagent consists of a mixture of iodine pentoxide, a colorless metal nitrate or concentrated nitric acid, and 75-98% sulphuric acid, the original white color of the reagent changing to pink, brown or black depending on the ethyl alcohol content of the gas. In a preferred embodiment of the invention, the reagent is placed in a tube for use in connection with drunken driving.
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